Projection printer



A118. 4 1942- G. M. DYE 2,291,613

PROJECTION PRINTER Filed Nov. 7, 1938 14 Sheets-Sheet 1 Aug. 4, 1942.

G. M. DYE

PROJECTION ERINTER 14 Sheets-Sheet 2 Filed Nov. '7,V 1958 Aug. 4, 1942.G. M. DYE

' PROJECTION PRINTER L WW@ 3 Np. m. e/, mM/M# i n i Filed Nov. '7, 1938Aug. 4,l 1942.

G. M. DYE 2,291,513

PROJECTION PRINTER Filed Nov. 7, 1938 14 Sheets-Sheet 4 Aus.4,1942. G.M. DYE 2,291,613

PROJECTION PRINTER .Filed Nov. 7, 1938 14 Sheets-Sheet 5 K Aug. 4, 1942.I G. M. DYE D K. 2,291,613

PROJECTION PRINTER affari/@y Aug. 4, 1942. G. M. DYE

PROJECTION PRlNTER Filed Nov. '7, 1938 14 Sheets-Sheet 7 l i 017Mo??? eyAug. 4, 1942. G, M DYE PRoJEcTxoN PRINTER Filed Nov. '7, 193e 14sheetssheet s ff/5 @3%. y?

lAug.v 4, 1942. G. M. DYE

` PROJECTION PRINTER 14 Sheets-Sheet 9 Filed Nov. '7, 1938 Iig. za

agria-FM y Aug. 4, 1942. G. M. DYE v 2,291,613

A PROJECTION PRINTER Filed NV 7 1958 14 sheets-sheet 1o l.l1g. 4, G. DYEPROJECTION PRINTER Filed Nov. 7, 1958 14 Sheets-Sheet 11 Aug. 4, 1942.G. M. DYE 2,291,613

PROJECTION PRINTER 14 Sheets-Sheet 12 Aug..4, 1942. G.' M. DYE 2,291,613

PROJECTION PRINTER Aug.4,1942. M DYE 2,291,613

PROJECTION PRINTER Filed Nov. 7, 195g 14 sheets-sheet 14 Patented Aug.4, 1942 UNITED STATES PATENT OFFICE PROJECTION PRINTER Glen M. Dye,Minneapolis, Minn. Application November 7, 1938, Serial No. 239,269 14claims. (ci. sis- 24) This invention relates to a projection printer formaking photographie prints or to a machine for making oversized prints.The machine is designed to make projection prints from negatives ofdifferent sizes, which prints will have a size range comprising a verylarge proportion of such projection prints or enlargements nowcommercially made.

It is an object of this invention to provide a motor-driven projectionprinter which' is constructed and arranged for rapid, convenient andeiiicient operation.

Itis a further object of the invention to provide a projection printerincluding a multiple negative holder of simple andeicient constructionand one that can be quickly and conveniently operated.

It is also an object of the invention to provide a printing devicehaving a novel and preferably automatic means for `discharging a printpreferably in position with its face upward.

It is'still another object of the invention to provide a projectionprinter for commercially making oversized or enlarged prints byk meansof which various standard sized prints may be produced from diierentsized negatives and in which single sized prints may be produced fromone negative with various magnifications.

It is alsoan object of the invention to provide' a projection printer inwhich single sized prints may be made from one negative with variousmagniications, and in which prints with white margins of varying widthsmay alsobe made.

It is still further an object of the invention to provide a projectionprinter having simple and eilcient means for placing an identifyingcharacter on each print together with simple and enicient means forinking said means.

Another object of the invention is to provide a projection printerhaving the focusing elements connected for synchronous movement so thatthe projected image is always in sharp focus, apointer associated withsaid elements, a series of masks eachbearing an identifying character, aseries o negative holders, each bearing an identifying charactertogether with a movable index member having spaced thereon said iirstmentioned characters and having said second mentioned characters wherebysaid pointer can he moved to align l vwith one of said second mentionedcharacters to properly position said elements for the mask and negativeholder being used.

More specifically it is an object of the invention to have said indexmember inthe form of a verters arranged crcumferentially thereon andsaid last mentioned characters spaced vertically thereon, said pointerbeing movable vertically along said column.

Still another object of the invention is the provision oi a projectionprinter having efficient light shielding means including anautomatically operated curtain moving to light obstructing positionduring'the printing period.

It is still further an object of the invention to provide a projectionprinter having a novel construction of platen mountingand comprising aservice cabinet having means arranged in a novel manner for receivingthe print paper, the masks used and also work orders, said means beingarranged to enable the operator rapidly and easily to operate themachine.

Another object of the invention is to provide a lamp casing constructionfor use in a projection printer, the same being easy of access andeasily cleaned.

Another important object of the invention is the provision of a novelexposure guide device for more accurately controlling a suitableprinting exposure.

Another object of the invention is the provision of a novel commercialprojection printer complete with all necessary equipment within easyaccess of the operator.

These and other objects and advantages of the invention willl be fullyset forth in the following description made in connection with theaccompanying drawings in which like reference characters refer tosimilar parts throughout the several views and in which:

Fig. l is a view in front elevation of the machine;

Fig. 2 is a view in side elevation as seen from the left of Fig. i;

Fig, 3 is a view in side elevation as seen from the right of Fig, l;

Fig. is a view partly in rear elevation and partly in vertical sectiontaken through a negative holder and lamp box as well as through thedrawer-supporting shelves on the frame;

Fig. 5 is a plan view of the machine;

Fig. 6 is a horizontal section taken just above the lens carriage;

Fig. T is a view partly in side elevation as seen from the right oi'Fig. i and partly in vertical section taken through' the lamp box andlight casing;

tical column having said rst mentioned charac- Fig- 8 l5 a View inVeltoai 3665011 tlrllgh the front of the printing'casing and closingcurtain 'shown on an enlarged scale;

Fig. 9 is a horizontal section taken just above the negative holdingmeans;

Fig. 10 is a diagrammatic view illustrating the relation between theopenings `in the negative holder, the lens and the print:

Fig. 11 is a perspective view of one of the masks Figs. 12 to 14 arerespectively of different sizes of masks used;

Fig. 15 is a view partly in side elevation and partly in verticalsection of the driving mechanism, a section being taken through th'elower part of the clutch and the enclosing casing;

Fig. 16 is a horizontal section taken through the top of the casingenclosing the driving parts and showing the driving parts in plan;

Fig. 17 is a vertical section taken through the casing enclosing thedriving parts showing the driving parts in side elevation, some partsbeing shown in section;

Fig. 18 is a'vertical section through the casing enclosing the clutchshowing the clutch and friction mechanism in side elevation;

Fig. 19 is a fragmentary view showing the tripping mechanism for the-printing lamp switch;

Fig. 20 is a view mostly in front elevation showing the Aconnectionbetween the driving clutch and the print carriage, some parts beingshown in vertical section;

Fig. 21 is a view in side elevation as seen from the right of Fig. 1 ofthe print discharging means;

Fig..22 is a view in front elevation of the parts shown in Fig. 21, someparts being shown in vertical section;

Fig. 23 is a view in side elevation of the parts shown in Fig. 22;

Fig. 24 is a view in rear elevation showing the connection between thelens carriage and the paper carriage, the parts being indicated indifferent positions in dotted lines;

Fig. 25 is a plan view of the mask carrier;

Fig. 25a is a fragmentary view showing a. section taken on line 24-24 ofFig. 25 as indicated by the arrow;

Fig. 26 is a view in side elevation of the platen numbering and inkingmechanism. some parts being shown in vertical section and some partsshown in different positions in dotted lines;

Fig. 27 is a vertical section taken on line 21--21 of Fig. 28 asindicated by the arrow;

Fig. 28 is a plan view of the platen mechanism Fig. 29 is a view .partlyin vertical section and -partly in side elevation of a numbering device;

Fig. .30 is a vertical section taken substantially on line 30--38 ofFig. 5, some parts being omitted;

Fig. 3l is a vertical section taken on line 8|-3i 0f Fig. 30;

Fig. 32 is -a plan view showing an exposure guide device, the enclosingcasing being shown in horizontal section;

Fig. 33 is a view in front elevation of the exposure guide device;

Fig. 34 is a vertical section through the exposure guide device;

Fig. 35 is a vertical section through a portion of the exposure guidedevice; and

Fig. 36 is 'a vertical section taken on line 36--36 of Fig. 34 asindicated by the arrows.

Referring to the drawings a machine is shown comprising -a frameincluding legs 58 shown as four in number. These may be of any suitableconstruction and are illustrated as of angle shape o,2o1,eis i in crosssection tapering toward their lower ends.

with the inside of their angles disposed inwardly and secured at their-upper ends by screws Il to a substantially horizontal plate or table Ilhaving a depending flange 82a extending thereabout with the inner sideof whichlegs il engage. A bar 88 of angular cross section extendsbetween legs 58 at one side adjacent their bottoms and another bar orplate Il extends betwen the pair of legs at the opposite side adjacentthel bottom thereof. A bar 58 shown as angular in cross section is alsosecured to and extends betwen the rear legs 88 adjacent their bottoms. Aplate 58 having upturned flanges at its edges is secured to bars 5l and88 and an electric motor 81 is supported by and secured to .plate B8. Apulley 58 is secured to the armature shaft of motor 81 and has a belt 58running thereover which also runs over a pulley Il secured to a shaft 8|Journaled in a bearing 82a carried in a plate 82. Piate 82 forms part ofa clutch frame and is supported upon posts 88 shown as four in numberand is'secured thereto by headed screws 84. Posts 88 seat on plate 88and are secured thereto by the screws 8l. Shaft 8| has a worm gear 88secured thereto which meshes with a worm wheel gear I8 secured to ashaft 81 journaled in a bearing 8l carried by plate 82. A clutch plate88 is secured to the end of shaft 81 and when the machine is inoperation is continuously driven from motor I1. Plate 88 cooperates withanother clutch plate 18 adapted to be brought into engagement therewithat certain times and to be driven thereby. Plate 18 will have somesuitable friction material 1Ila thereon and is secured to a shaft 1|journaled in a bearing 12 carried by plate 88 on arm 18. Arm 18 ispivotaliy connected to a link 14, the other end of which is secured toan arm 18 having a hub secured in any suitable manner as by pin 18 to ashaft 11.

Shaft 11 is iournaled in a bearing 18 secured in plate 58 and has anenlarged portion above said plate extending into and secured in thelower end of a tubular shaft 18 as by a pin 88. Shaft 18 extendsvertically adjacent one side of the machine and is secured -to a pulleyblock |28 to be later described which has a reduced portion I28ajournaled in an opening in a casing top I22a to be later described. Theclutch comprising plates 88 and 18 is a half revolution clutch andincludes a third plate 8| having downturned ears at opposite sides andto which are secured studs 82 having Journaled thereon rollers 88. Plate8| has apertures at either side through which extend studs 10b securedto and depending from plate 18, said studs having pins 84 extendingtherethrough below plate 8|. Compression coiled springs 88 surroundstuds 1lb engaging plate 10 at their upper ends and plate 8l at theirlower ends. The plate 56 has spaced openings a thereon spaced the samedistance as the rollers 83 and into which rollers 88 are adapted to dropto determine the half revolution period of the clutch. Said clutch isadapted to be actuated by a toe trigger or pedal 88 oscillatable aboutthe axis of a rod or shaft 81 journaied in small blocks 88 secured tothe underside of plate 58. A bar 88 is secured to shaft 81 by which thetrigger plate 88 is carried and an arm 98 is secured to and extendsrearwardly from bar 88 and carries clutch actuating parts adapted tovraise plate 8|. The trigger plate also has upstanding therefrom'a stud8|. A tensile control coiled spring 92 is secured at one end to aprojection on plate 60 and is secured at lts other end to the upper endof stud 9| and said spring acts to hold trigger plate 86 in its raisedor inoperative position. When trigger plate 96 is presseddownwardly bythe toe of the operator to its lower position the clutch makes one-halfa revolution and arm 13 also makes a half rev' elution or rotatesthrough 180 degrees. A boxlike ycover 56d fits over the flange on plate56 and-forms an enclosure for the motor and clutch parts. The specicconstruction of thev clutch need not be further described as it per seforms no part of the present invention. A casing 50a secured to plate 56encloses .arm 15.

A lamp box is provided, the top of which is formed by a plate or casting52h which is secured in and in eiect forms part of table top 52. Saidplate 52h has a iiange 52e at its forward end having therein a slot oropening 52d which is continued as a slot through the bottom of plate 52hfor some distance. Said plate 52h has a raised portion 52e therein and atrough 52j is formed at the front portion of the plate 52h betweenflange 52e and portion 52e. Portion 52e is apertured and has a dependingcylindrical flange 52g extending downwardly therefrom. An annular flange52h is formed in portion 52e andforms the support for a lens 93. Saidlens may be positioned on a resilient annular strip 94 shown as circularin cross section. Said lens 93 is held in position by a plate 95 whichmay be made of any suitable material and in practice has been made ofmasonite. Plate 95vis secured to' portion 52e by countersunk screws 95a.A small bracket 96 is secured to the underside of plate 52b at itsforward portion by small screws'96a and has a lip extending downwardlyand inwardly-substantially at a 45 degree angle. A front plate 91 isprovided for the lamp box; the same having a latch 91a pivoted theretoby a pivot member 91h, said member 98- being adapted to be moved overthe inner side of bracket 96 to hold plate 91 in closed position. Plate98 has small brackets 91e secured thereto, the same being offset to formlips directed toward each other and to extend over a mirror 98 which isthus secured to the inner side of .plate 91. Plate 91 is hinged by ahinge to the Vertical stationary front side plate |0|a of the lamp boxcasing |0|. Side plate |0|a has secured. thereto adjacent its bottom aresilient cushion block |00a against which plate 91 will engage shouldit be dropped. Casing i0| has a bottom plate |0|b having an aperture|0|c therethrough, one function of which is to admit cool air into thelamp box. The lamp box also comprises side plates |0|d which engage theouter side of anges 522' formed on plate 52h and to which they aresecured. Brackets |02 illustrated as formed from angle members aresecured to side plates I0 Id and extend across the lamp box adjacent thebottom thereof. Headed screws |03 extend through the lower part oi.'bracket |02, being held therein by nuts |04, said bolts also extendingthrough a plate |05 and being equipped with. wings or thumb nuts i03abeneath plate |05, saidnuts thus holding said plate in position. Plate|05 is centrally apertured and forms a seat for a ball member |06aformed on a rod |06 which extends through the bottom of the lamp boxthrough opening i06c and carries at its upper end the lamp socket |06cin which the printing lamp |01 is secured. Rod |06 has a handle |06b atits lower end. A stationary contact member |08a forming one part of theprinting lamp switch |00 is carried on a small angle bracket |09 securedto one side plate |0|b. The movable contact |08b of switch |08 iscarried on a pin ||0 slidable vertically in a slot in side plate |0|b,plates of insulating material being disposed atthe inner and outer sidesof side plate |0|b and moving with and forming in eiect guide membersfor pin ||0. Pin ||0 extends through a vertically movable bar ||2, said.pin having a head formed thereon at the outer side of said bar andhaving l a small cotter pin H3 extending therethrough at the inner sideof inner plate Bar ||2 extends downwardly through a slot 62a in plate 62and has formed therein a notch ||2a adapted to engage with plate 62 atone side of slot V62a as shown in Fig. 19. Bar ||2 has adjustablysecured thereon a block ||2lg held in place by a screw ||2c and saidblock is adapted to be engaged by a projection 03a on one of the rollers83 in the revolution of plate 0|. This disengages notch ||2a from plate63 and bar f| I2 is moved downwardly by a tensile coiled spring ||4secured to bar H2 at one end and at its other end to plate 63. A pilotlamp |01a is also provided in the bottom of lamp box casing |0|. Asecond and condensing lens 93a is provided disposed at right angles tolens 93 and carried in an angle bracket |0|e and secured therein byheaded and nutted bolts lld'. Spring washers |0|f are disposed underthe'nuts on bolts |0|d' and clamping members 93h which may be oiresilient material are disposed under the heads of the nuts on bolts|0|d and engage lens 93a. It will be seen from Fig. 30 that lenses 93and 93a are flat on one side and have convex surfaces at their otherside, said convex surfaces being directed toward mirror 98. A flatcasing |0|h is disposed below plate B2b above lamp |01, the samecontaining insulating material |0|i. Said parts are provided to preventthe heat from lamp |01 unduly heating plate 52h thereabove. An openinglilly' leads from the upper part of the lamp box and communicates with avertical ilue |0|lc which extends upwardly to the top of the machine andis' secured in a yoke |3| to be later described. While said flue may beof any form, in the embodiment of the invention illustrated it is shownas rectangular in cross section.

The member 95a has an opening therein through which the light forprinting passes and the top surface oi member 95 forms the supportingsurface for the negatives such as films which are to be printed. Anegative holding means is provided comprising a rotatable plate orturret H5. Plate ||5 is rotatably mounted-on a pin H6 secured in member52h and is arranged to be raised by a sleeve ||1 disposed therebeneathand slidable on pin M6. A rest for plate ||5 is provided comprising aheaded screw ||5clk adjustably threaded into member 52h and adapted tobe held in adjusted position by a lock nut H5131. Sleeve ||1 is adaptedto be lifted'by a lever ||8 having end portions disposed in oppositesides thereof, 'said lever having parallel spaced portions joined attheir ends remote from sleeve lll. Lever ||8 is arranged to tilt about afulcrum member I9 carried on member 52h. An operating means for plate||5 is provided and comprises a knee-operated lever |20 having ahorizontal portion |20@ journaled in bearings |2| secured to theunderside of table 52, said portion being bent at its end substantiallyat a right angle, and disposed to overlie the closed or outer end oflever H8. Lever |20 also has an ings are of different sizes'and shapes.Openings f Ilia are thus adapted for use with negatives of dinerentsizes and are adapted to determine different areas to be printed. Flatspring members I Iic are secured at either side of one of the openingsIlia and press on plate IIi at the sides of said opening, said springsbeing adapted to hold certain small films or to engage a special holdingmeans for a. very small illm such as a strip iilm from a motion picturecamera. Plate ||i is adapted to be held or locked in position with oneof the openings Ilia over the light opening Sia and for this purposesaid plate is provided with a plurality of holes llid. there being onefor each opening Ilia. When the respective opening Ilia is in properposition relative to the light opening the corresponding hole IIidreceives a pin Ilie which upstands from member i2b. When the plate |Iiis lifted for rotation it is lifted clear of pin IIie.l A casing |22having a substantially horizontal top |22a spaced a short distance abovetable i2 extends over holder IIi, the same having outwardly anddownwardly sloping sides. Said casing |22 is open at its front for theinsertion and removal of the negatives and also has its top |22c offsetupwardly at said front. The open front portion of casing |22 is closedduring the printing operation by a flexible opaque curtain |23. Curtain|23is weighted at its lower tion and portion |24a folds and liftscurtain |23 to open position and then lowers it to closed po sition. Thepulley block |23 oscillates at the beginning and end of each printingoperation and moves through slightly more of a revolution than isnecessary to operate crank rod |24 and raise and lower curtain |23. Belt|2ia slips on pulley I2i.' 'I'he curtain and crank |24 may be operatedmanually at any time if it is desired to lookintotheopeningincasing |22.Thiscanbe done without throwing the operation of crank |24 and curtain|23 out of step or synchronism y with the machine. The belt |2ia willmerely edge in any suitable manner as by having a metal folded portionof the curtain and forms the weight for the edge thereof. Said curtainand weighted edge overlap at their ends the downwardly and outwardlysloping front portions |22b' of casing |22 which are disposed at eachside of the opening in its front as shown in Fig. 9. Curtain |23 ismoved to open and closed position by a crank rod |24 having the portionI24a extending across the underside of said curtain. said rod havingportions |24b journaled in bearings in casing |22 at each side of saidcurtain. Portions |24a and |24b are parallel and spaced about half thevertical width of curtain |23. One portion |24b at the left of Fig. 6 isextended and has secured thereto a pulley I2i. A belt I 2id runs overpulley I2i and turns through a right angle `to run in a groove I20b inpulley block |23. Block |23 is secured to the tubular shaft 13 by ascrew |2ic. A cap I2id is clamped to block I2i having ears depending atone side thereof to receive a clamping bolt I2ie. A shaft |21 ofpolysonal shape in cross section illustrated as of hexagonal shape fitsin a corresponding aperture in cap I2id and is driven thereby fromtubular shape 1i through block I2i. Cap I2id may be adjusted to vary theposition of shaft |21 relatively to shaft 10 for a purpose to be laterdescribed. The belt |2ia is secured to pulley block I2i. Crank rod |24is oscillated through substantially 180 degrees at the beginning and endof each printing operaslip on pulley I2i and said pulley and crank rodwill again be operated at the proper time in the operation of themachine by belt I2ia from block I2i.

Two rear rods |30 and forward rods Illa and |30b are secured at theirlower ends in top |22a and extend vertically to a three sided yoke |3|having forwardly extending parallel sides spaced at their iront ends.While yoke I3| could be variously made, in the embodiment of theinvention illustrated it is shown as in the form of a channel with itsopen side directed downwardly. The forward rod |30a is rectangular incross section and has a groove |3ic rectangular in cross section at itsinner side. Rod |30b is illustrated as rectangular or substantiallysquare in cross section. Rods or posts |30, |30a and I30b form guides onwhich are slidable two assemblies, one vof which carries the projectinglens and the other and upper of which carries the paper supporting andhandling mechanism. The ilrst of lsaid assemblies includes a plate orlens carriage |32 having a rather long portion |32a carrying spacedrollers |32d engaging opposite sides of a vertical ilat bar |30ddsecured to bar |30b. Carriage |32 has an arm |32b extending across toand having its end disposed and slidablekin the groove I34c, said arm|32b thus constituting a steadying and guiding means. Carriage |32carries the lens unit |33 which comprises the usual iris or diaphragmfor exposing more or less of said lens or increasing or diminishing anopening close to said lens. This iris is arranged to be operated by anoscillating arm |34 movable to and adapted to be held in diiierentpositions indicated as I3i on plate |32. Plate |32 has secured theretoand depending therefrom spaced plates |36 extending forwardly andrearwardly, said plates being connected by a similar rear plate |31.Plates I3i and |31 move close to the sides of an opening in top plate|22a and prevent the passage of light outwardly from casing |22 whenlens unit |33 moves upwardly. Also movable with the lens carriage at thefront and above plates |33 and |31 is a plate |30 having a forwardlycurved upper end which extends over a plate |39 ilxed to the top plateI22a. Plate |39 has its side edges bent around and forming guides forplate |38. Plates |33 and |30 prevent the passage of light upwardly.

The other of said two assemblies constitutes a paper carriage andcomprises a member |40 having a sleeve portion I40a slidable on forwardrod |30a and a small roller I40c engaging a fiat bar |30d secured to bar|30a. Casing |40 also has a portion |40b slidable on rod |3Ib. PortionI40b has a smaller roller |4| Journaled therein and arranged to roll onthe outer side of rod I30dd. Member |43 at one side has secured theretoa pulley |42 rotatable on a headed stud |43 secured in member |40. Acord or cable |44 is secured at one end to a lug |3|a projecting fromyoke |3| and extends downwardly around pulley |42 and then upwardly andover a pulley |45 rotatable on a headed stud.|4| secured in yoke |3|.From pulley |45 cable |44 extends downwardly and is connected to arather long cylindrical counterweight |41 (see Fig. '1) which is movablein a tube |48 disposed at one side of the machine .and secured in table|52 and in plate 56. Member |40 has projecting forwardly therefrom abail handle |50. Rod |30a has a rack 130e formed on or secured to itsouter side with/ which meshes a small pinion |51 carried 4`on`a shaft|52 journaled in member |41, said l connected and arranged fordetermined relation in movement so that the image projected by the lenswill always be sharply focused on the paper bylens unit |33. To this endlmember |32 has a pin |54 projecting at its rear and disposed in -anarcuate slot |55a formed adjacent the end of one arm |551) of a bellcrank lever |55 pivoted on a pivot |56 supported in a small bracket |51secured to top plate |2211. Lever |55 has its other arm |550 extending'upwardly and said arm 155e has a pin |56 secured therein which pin isdisposed in and arranged to move in a cam slot |5901 formed in a camplate |59 secured to the paper carriage |40 by screwsfor bolts |66 ateach end thereof. Said cam plate is arranged for some adjustment and tothis end is provided with elongated slots |591: through which pass theheaded tightening screws |60.

The paper carriage |40 has secured therein by plate brackets |61 havingdove-tailed grooves elled sides fitting in'said grooves. The shaft |21already mentioned extends upwardly to and has a reduced portionjournaled in a bearing 140g. Above said bearing |409 shaft |21 hassecured thereto a beveled gear |63 with which rneshes another beveledgear |64. vGear |64 has half the number of teeth of gear |63 so thatsaid gears have a ratio of two. to one. Gear |64 is secured to a sha-ft|65 extending horizontally and journaled in bearing portions |4011 and|40e respectively of carriage |40. A mask carrier |66 is vprovidedhaving a central portion formed as a comparatively thin flat plate atthe sides of which are plate-like portions |66a disposed insubstantially vertical plane and having a small height at their frontends but increasing in height toward their rear ends. One of saidportions |66a extends to and is swingingly connected to the shaft`|65through a collar |61 which is secured .+o said portion |66a and isjournaled on shaft |65. Carrier |66 has a central opening |66b thereinof greater area than any printed area to be made on the machine.Upstanding lrgs |660 are formed in carrier |66 at the rear of opening|66b and disposed equal distances from the forwardly extending centerline of said opening. Lugs |66c are formed by small angular'plates'secured to the bottom oi.' carrier |65 and having vertical portions,projecting through slots |66e formed .in said carrier. Said upstandingportions have laterally extending slots |66f formed therein at theiradjacent sides just above the top surface of carrier |66. Spring clips|68 are secured to the carrier |66 at its front edge and are alsodisposed equal distances at each side of said `center line. The frontedge portion of carrier |66 is slightly downturned as seen in Fig. 2iand said clips |68 are secured to said downturned portion by screws |69.A plurality of masks |10 are provided, typical ones of which areillustrated in Figs. 11 to 14. These masks will each bear an identifyingcharacter oi.' a series such as a number or letter. In the embodiment ofthe invention illustrated numbers are used. Said masks which are shownas made from. quite thin sheet material such as metal; have right anglenotches |1011. cut in their rear corners and have similar notches |101)cut in their front corners. When the mask is placed in position oncarrier |66 the lateral edges of notches |100. fit between lugs 166e andthe lateral edges of notches |1017 fit between spring clips |68, themask adjacent notches |1012 slipping under said clips. The part of themasks at the rear are received in the slots |661' of the lugs |660. Thedistance between the lateral edges of the slots |1611. at the rear ofthe masks is the same for each mask. The distance between the adjacentlateral edges of the notches 110D at the front of each mask is the samefor each mask but this distance is greater than the distance between theedges of the rear notches. This difference is provided so that theoperator cannot get the masks in the wrong l therein a plate glassportion |62, which has bevposition with rear end in front. Each mask hasan opening therein which determines the area on the print paper exposedfor printing.

Each mask |16 also has upstanding plate-like parallel ribs |100 disposedequal distances at each side of the opening therein, which ribs havetheir front end portions extending inwardly some distance at rightangles. guides enabling a rapid positioning of the print paper. l

A platen structure is provided comprising a platen plate |11 adapted toengage the print paper. Plate 11| has a pair of upstanding lugs' i1 iaat each side thereof having rearwardly proiecting portions |1|v,saidlugs having forward and rearward surfaces at their tops which slopedownwardly' from a meeting line. Lugs |1|a project through slots |12czin a platen carrier |12 and said top surfaces of lugs 11| are engaged byplate springs |13 secured at their midpoints tocarrier |12 by screws|14. Springs |13 have their ends |13a bent to correspond to the slope ofthe top surfaces of lugs |1| and said ends engage the forward slopingsurfaces of each pair of lugs |1I. It will be noted that slots |12a areof sufficient length for the entire length of lugs |1| to passtherethrough. As shown in Fig. 27, lugs |1| have their rear edgesincontact with the rear edges of slots |12a. It will be seen that thesprings |13 urge lugs I1|a rearwardly to the position shown in Fig. 27.By moving plate I1| forwardly the lugs |1|a may be passed through theslots in 4carrier |12 and saidplate removed therefrom. With thedescribed construction it will be seen that platen plate l'l-I isyieldingly mounted on carrier |12 and will be yieldingly pressed againstthe print paper. Carrier |12 has upstanding plate-like ribs I-12b alongits side edges which increase' in height toward their rear ends andextend to shaft |66. Said ribs |1217 are apertured to receive shaft |65and are pivoted thereon. A platen actuating arm |15 is se'- cured toshaft |66 centrally laterally of carrier Ribs 116e form ing block andcollar |00.

' charge the print and for this purpose the portion |004 at the rightextends to and is apertured to receive shaft |00. A cylindrical collar|00 (see l'ig.22) isboredtoreceiveshaft |00 andhas a hub extendingthrough portion |004 of carrier |00. Collar |00 is secured to portion|00a by screws |0| which pass through a plate |02 between portion I00aand collar I 00. A cylindrical clutchbody |00issecured|oshaft lllbyapin|00 and has its inner side close to the outer side of collar |00. A pin|00 extends through a bore in body |00 parallelto shaft |00 and isadapted -denareturnandanypoundingofthemaskcarrier. arm |00 rides againstroller |00 and exerts tension on spring |01. This retards motion ofplate |02 and the mask carrier comes gently to rest as roller |00 entersrecess I00b. It will be noted that arm is oscillated through 180delgrecs at each printing operation. This oscilto enter and be withdrawnfrom a cylindrical hole in collar |00. Pin |00 has connected to itsouter end a segment of a sphere or a cone |01 having its conical surfacedirected inwardly. Said segment or cone has its outer dat side engagedby one side of a fiatannular spring |00 secured by screws |00 to theouter side of body |00. Cone or segment |01 is adapted to engage thepointed or conical end of a pin |00 threaded into a plate |0| and heldinadjusted position therein by a lock nut |02. Plate |0I is connected topaper carriage |00 for longitudinal adjustment thereon by screws |00.The plate |02 as shown in Figs. 3 and 2l is in the form generally of asegment of a circle and the same has secured thereto a counterweight|00. Said plate has therein a semi-annular opening |02a arranged toembrace a portion oi' print carriage |00 in the movement of plate |02.Plate |02 has pivoted thereto by a screw |00 a curved arm |00 to oneendof which adjacent pivot |00 is attached a tensile coil spring |01functioning to hold a lip |00a at the other end of said arm against alug |0217 on plate |02. Spring |01 is connected at its upper end to alug |02c on plate |02. Arm |00 has a curved recess |00b therein adjacentits free end. Arm |00 is adapted to engage or ride upon a roller |00journaled upon a stud |00 secured in paper carriage |00. With theydescribed structure it will be seen that upon rotation of shaft |00with the mask carrier |00 and platen |1I in print holding and printingposition block |00 will be rotated and by means of pin 00 collar |00will be rotated thus rotating and lifting portions I00a and the maskcarrier 00 and the mask held thereon. At the same time platen actuatingarm |10 will lift or rotate platen carrier |12 and with it the attachedplaten |1|. The mask and platen will be lifted and oscillated togetherwith the print therebetween until cone or segment |01 engages pin |00.This moves cone |01 and pin |00 outwardly thus disconnect- The maskcarrier |00 is thus released from shaft |00. At this time the mask andcarrier |00 has been moved some distance past the vertical as indicatedin Fis. '1. When released, the mask carrier and mask thereon swing backto print receiving position. This swinging of the mask carrier back toprint receiving position is caused by the weight |00 f which has beenmoved around and past a position below the axis of shaft |00. To preventtoo sudlates arm 10 through link 10 somewhat less thandegreesasseeninPlg.i6. Inpracticearm 10 swings through about 112degrees. Shaft |21 isthusrotatedlessthan 180 degreesandshai'tl0lwillbeoscillatedtwiceasfarasshaft|21 due to gears |00 and |00 orapproximately 220 degrees. After the mask carrier therefor is releasedthe platen continues to oscillate with shaft |00andfinallyslopesrearwardlyanddownwardylyasseeninl"ig.'|sothattheprintisdis'cli'ai'getl downwardly andrearwardly in face upward position. The platen is of course. returned toprint position by movement of shaft |00 upon the next half revolutionmovement of arm 10. Asstated, an adjustment can be had for `the positionof shaft |00 relatively t0 Shaft |10 through the cap member |20d. Thisadjustment canbearrangedsothattheplatenmember comes into proper positionagainst the paper and at the proper time. The platen plate is yieldingl!pressedagainstthepaperandthisyieldingpressure will be caused bysprings|10. 'lhs member |01 must occupyits upperpositionatthetimethe platen isin contact with the paper. This adjustment is necessary so that the maskcarrier and platen will be lifted together and there will be no lostmotion in lifting the platen.

A numbering vdevice is provided for placing an identifying number orcharacter on each print made and for this purpose a numbering stamp isprovided such as shown in Pig. 29. 'I'his comprises a rotatablenumbering member 200 which may consist of several disks having numbersor letters thereon. A ratchet wheel 20| is connected to a shaft 202 onwhich the numbering member 200 is journaled. An actuating pawl 200 isshown connected to s. lever 200. Lever 200 is held in position by a searspring 200. The described parts are mounted in a frame 200. Thenumbering device can be changed by the operator pressing downwardly onlever 200. The numbering device shown in Fig. 29 per se forms no partofthe present invention and is now in commerce. Said numbering device isconnected to the platen carrier |12 between brackets 201 which aresecured to said carrier. 'I'he numbering device 200 is such that itincludes type which require inking. A bracket 200 is provided which ispivotally connected by a pivot pin 200 to the upper part of bracket 201.Said bracket 200 is of channel form having side portions 200a havingcurved converging sides as shown in Fig. 26 which are connected at theirwide portions by a fiat portion 200D. Said arms 200a have disposedtherebetween an inkling roller 2|0 mounted on a headed stud 2| extendingthrough and between arms 200e and held from movement by a cotter pin2I2. A coiled torsion spring 200a is disposed about pivot pin 200 andsecured to bracket 201. the same acting to hold bracket 200 in itsnormal position shown in Fig. 26. A bracket 2|0 is secured to the rearportion of paper carriage |00. the same projecting rearwardly therefromand having secured therein a headed and nutted stud 2|0. A cam roller2|0 is journaled on said stud between the head thereof and bracket 2|0.

When the platen is swung downagainst the paper the printing memberl 200projects through

